Scraper



2,1923 A l A1,686,148

C. E. DAVIS A orinal Filed March 26. 1923 l2 Sheets-Sheet 1 Oct. 2,192s. 1,686,148v c. E. DAvls n S GRAPER original Filed March 26'; 1925 2sheets-sheet 2 Patented ct. 2, 1928.

UNITED" ser CHARLES E. Davis, or DAVENPORT, FLORIDA, AssiGNoR Toacont/AN trentinacruia-A s ins-6,1143.

ING coMrANmorcHIcAGo, iLL'INoIs, A "oonPoRATIoN-or.iLLrNoIs. y

sorteren. l

Appucaan fue@ March ze., iszaseriai No. 627,543.1 Renewed 'septemterja192e.

A This invention relates to improvements in draft operated Scrapersusedforhgathering and transporting' loose material Aand hasfor itsprincipal object to produce an improved form of scraper capable of beinginitially l:deflected from its normal path'of movement to gather loosematerial distributed over 'position When 4desired,vthe walls lland"relatively wide areas. A further-object is to provide an improved methodof gathering coal or thelike from a mine room.

My invention may best beunderstood by reference to` the accompanyingdrawings which illustrate one form in which my invention may beembodied. -In the drawings:

' scrap er.

f Figure 2 1sl a planfview 0f vthe scraper.

shown in Figure 1.

Figure 3 is a transverse section ,of theV scraper. l U Y Figures. 4, 5,6 and` 'i' arefdlagrammatic views illustrating the use and operation of.my improved scraper in gathering coaladjacent the working face of amine;

,. ferring now to details, the scraper comprises'a body made up of twosidewalls 11a,

` and 11", preferably divergingffrom `the rear to the front end ofthescrap'er, although other forms or shapes of scraper body may beprovided if desired. The scraper is pref- 'erablybottomless, the wall11a, 11b being providedwith inwardly extending iiange's 1728,', l2balong their lower margins, to formcutting edges for engaging thematerial to be gathered@ The walls 11a, A11b are pivotally connected byahinge, which may-.be of any., suitable form as for instance,k1tmay com-kprisev a pair of eyes `13', 13 on Vone wall 11 .andan intermediateeye 14in the otherwall 11b, having a hinge pin 15 of any approved patternextending therethrough.; In the form shown, the side walls 112,11* arehinged centrallyvof therearend, although l' under some conditions it maybe desirable to varythe position ofthe hinged connecupper face of thelower iange 12b, and the said lower ange engages a stop 17 yformedon-the upper flange 12a. A crossbar 18 is rigidly attached adjacent theforward end Figure 1 1s a rear perspective view of a" of onevsidemember, as for iiistance,the"wall y 11"V fand extends acioss'into'Vpositionftojenf Y gage,the'opposite'side member 115..1Th'e n free. endof said crossbar is provided'withA a projection 19 adaptedr to `registerwithfan.

through'when the sideV Walls arein closed 11br may be 'rigidlyconnected,v together lsecuring the vfree end 'offthe 'crossbar181 towall 11?. For example, a'pin21A may vbeinkserted in a liole] 22 throughthe projection thelatter is engaged inthe aperture`Y l 19 when Draftmeans for thel scraper comprises a head rope 24 connected tothe forwardend so: laperture 2O inl wall lla'and eXtendthereof the scraperbysuitable' means suchja's they terminals 25, 25, secured respectivelytoa`rope 26 connected, to the lrear endl of :the scraper by suitable means"lsuch as a'ring27 vforward end of walls'lla, and 11b, and'a'tail Y.

whichin the form shown. isrfconnectedito the;V

intermediate eye `14s of the' hinge.` Y

The useandoperation of the scraper.abovei describedrwill .be understoodby referenceI toflffigures 4, 5, 6 and 7,V illustrating fits "use in amine room. In this instancethescrapefr is beingu'sed for gathering,loose materialadjacent the working *faceffof thel minel indicated at 30`Y Aside Waller rib 3 1'A nieets'- the Working face 30 at angle, formingaf corner as shown 1n these figures. 'In Figure i a pile ofloose'm'aterial has been: deposited on the ydoor adjacent theA workingfa'ce`,:the'f toe Vor forward edge of this pilebeing'inditerial"adjacent themside wall A313 is'icleared;

Y 90.` catedV at 32.` The portion of thelo'ose maaway fora purpose that'will presently appear. Thefscraper is installed for reciprocable`movement along the working facef in ther-usual manner wellknown'tofthosev familiar V with lmining "methodsl [The l'tail xed by a ack'or similar' means against the side 'wall or rib 31 and adjacent thework-v diagram.,v VIn the loading I.operation :the scraper`is,pulled-rearwardly bythe tailrope'- into positionsubstantially shownin Figure? 4'. Now," before starting the "forward move rope 26is-trained over yasheave or guidee ment' of the scraper, the-operatormay move the side 11a of the scraperjpivotally away` from the side 11binto a position shown in Figure 5, in which it will Vbe seen that theforward edgeof the wall 11b is pulled about`1j10 10o Y ing face 3Qsubstantially asshown inthe l Y t Avaried Without i Vpen .fandpositioned inthe clearedarea in the corner i the room'. In this positionit will be observed that the, hinged portions '11n andrllh-*are spreadapart so that the terminals 25, 25 connected to the head rope aresubstan- A tially in a straight line. The scraper is readyvfor itsinitial forward movement,'this movement being commenced by placingtension upon the head rope24. `The operator may then direct the hingedportion l1a so as to engage the pile of loose material, the pull on thelhead rope beinor applied directly to this hinged portion. further'pullonthe draft line tends to closethe hinged walls, but

:1 5 dueto the greater-.resistance exerted by the material en aged bythe hinged portion 11a, the other hinged portion 11b will bepulled'inwardly toward the Working face, als indi- Vcated ln Figure 6.V Themovement of the .20" scraper will therefore be initially deflected Sifa`may be initially d1rected toward the `vvor `face as in theiirstinstance. Similarl'y, te scraper ma be directed to the' opposite side ifdesire' by movement of the wallll, Y y d v Y l'th'oughl have` shown anddescribed one `form infwhich vmy fore wish to be understood as limiting`myself tothe speciic construction illustrated hereinv `exee tingg-asspecificallylimited in the vapedclaims.A Y t I claim` as my invention: YY

I. A scraper provided with forwardly 'eX- tending walls having hingedclosed connection atftheir .rear ends whereby said walls may bep'iyoltallyfmoved lateral y respective 66 to each other, a flexibleconnecting member havin its terminals eachj. connected with one of saiV.walls,and a dra@P linek connected to' i 4the central portionofsaidlle'xible connecting member". Y i 1 l 2. scra er provided withforwardly extending Vwa lspvotallyy connected at their rear endsVwherebysaid walls may be Vmoved laterally' respective' j to each other,means limitingcthe inward vmovement of said walls,

.tive points of connection lwith the sidewalls i A scraper provided withforwardly eX- invention'may be enibodied, `it will be understood thatthe con-A stictiori-,and arriargement ofthevr parts may'` eparting fromthe spirit: and `scope of my invention. Ido not therecansinor tension tobe placed on the drag line,

`and

a fleXibleY connecting member having fits terminals each connected withone oi said walls, and a drag line connected to the centra'l'por-r tionof said flexible connecting member.`

3. A scraperprovided with forwardly eX- tending walls pivotallyconnected at their rear ends whereby said walls may be moved laterallyrespective to eachother. means lim'- iting the inward movement oi' saidwalls,'and adrag line connected to a flexible connecting memberhaving'its terminalseach connected with'one ot saidV walls, the totallength of said flexible connecting member being great-VI er than thedistance between its lresp'ecel' when the latter are in a closedposition;Y

tending walls }v ivotally connected at their rear ends lwhereby,saidwalis vmay beinovable laterally respective to each other means' limitingthe4 inwardnioveinent of ysaid walls, av drag line having connectionAwith a rflexible connecting member having its terminals eaclr fconnected with one ot'said walls, and aftai'l line connected with saidscraper.'V i

` V5. A scraper provided with forwardly" exl tending walls pivotallyconnected together at", the rearward end of said scraper to swingoutwardly respective to each other, "means limiting the inward movementof said walls, a flexible connecting member connecting vthe" outer'extremities 'of said walls together and limitinfr the outward movementof said walls",y

f and a drag line operatively connectedfto'` saidflexible connectingmember. j A scraper provided with j forwardlyV extending walls p'votallyconnected at their rear ends whereby `said walls may :bemoved laterallyrespective to'each other,v means liniiting' the' inward movement of saidwalls, a lex1ble Aconnecting member operatively con-"100 necting a' dragline `with said movable walls, Y and means for rigidly connecting saidwalls together.

:7. s The method lof dellecting a (il-ragl line scraper during itsinitial forward movement under tension, which consists in shifting amovablef side' wall portion ot saidscraper laterally into positiontoengage a portion of the inaterialfto vbe gathered,Y and thereafterV11b Where y the' resistal'ice'of the materialV enr-n* gaged by saidmovablewall portion will cause the' entire scraper to be initiallycleflected at an angle to the drag lineQ- Y Y Signed at "Chicagmintheco'unty of Cook tate of Illinois, this 23rd day of March,

i CHARLES E. Davis.v

